Useful tips for everyday
What is sample and example? The definition of a sample is a small part of something used to represent the whole or to learn something…
Which process metrics can significantly improve defect prediction models? A considerable research has been performed on identifying the process metrics which influence the efficiency of…
What is covariance of a distribution? In probability theory and statistics, covariance is a measure of the joint variability of two random variables. In the…
What is the ideal size for study in a panel data? In any case the problem of the sample size determination can be reduced to…
Which problem is considered as clustering problem? Clustering can be considered the most important unsupervised learning problem; so, as every other problem of this kind,…
What is the purpose of the stacked autoencoder? Stacked Autoencoder Some datasets have a complex relationship within the features. Thus, using only one Autoencoder is…
Why is ROC bad for Imbalanced data? Although widely used, the ROC AUC is not without problems. For imbalanced classification with a severe skew and…
What makes a graph connected or disconnected? A graph is said to be connected if every pair of vertices in the graph is connected. An…
What does C mean in Stata? Stata handles factor (categorical) variables elegantly. If you want to interact a continuous variable with a factor variable, just…
What would a correlation coefficient r 0.2 indicate? The sample correlation coefficient, denoted r, For example, a correlation of r = 0.9 suggests a strong,…